The Category blocked was Alcohol, however, I whitelisted this category. Disabling the filter based category allowed this.

Problem was the Fortigate GUI was not displaying the actual committed config on the firewall ( the profile was screwed )

solution

this way the “default” profile was visible

Also you might want tod DNS Filter

basically DNS filters work like webfilter but at DNS level

so let say you want to go to youporn

the firewall try to resolve the name of youporn.com but since it is a blocked category

it blocks the resolution of the name even before you get to browse itWe saved this conversation. You’ll see it soon in the Conversations tab in Skype for Business and in the Conversation History folder in Outlook.